Detailed explanation of the machining accuracy of CNC woodworking lathes

The machining accuracy of CNC woodworking lathes includes several aspects, namely geometric accuracy, positioning accuracy, static accuracy and transmission accuracy.Gaomi Hongxiang Electric Technology Co., Ltd. will introduce the common sense of these aspects in detail for everyone.：

1. The geometric accuracy of CNC woodworking lathes.Geometric accuracy includes shape accuracy, geometric accuracy of mutual positions, and geometric accuracy of their relative motion.The surface shape of the workpiece processed on a CNC lathe depends on the relative trajectory of the tool and the workpiece, and the tool and the workpiece are directly driven by the actuator of the CNC woodworking lathe. Therefore, the geometric accuracy of the CNC lathe is the basic condition to ensure the machining accuracy. Each type of CNC woodworking lathe has its own geometric accuracy requirements.Geometric accuracy generally includes: the axial movement of the spindle, the radial circular beating of the spindle, the mutual verticality of the movement in each coordinate direction, the equal height of the axis of the spindle taper hole and the axis of the tailstock taper hole, etc.

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2. The positioning accuracy of CNC woodworking lathes.Positioning accuracy refers to the accuracy of the actual position to be achieved when the moving parts of a CNC woodworking lathe move from one position to the expected other position. The error between the actual position and the expected position is called the positioning error.For parts with periodic indexing movement such as tool holders, the positioning error is reflected as the angular displacement error. Corresponding to this, its positioning accuracy is called the indexing accuracy.If the moving part of a CNC woodworking lathe is repeatedly positioned from one position to another, the error between the actual position reached by each positioning is called the repeated positioning accuracy of the moving part.The geometric accuracy, transmission accuracy and positioning accuracy of CNC woodworking lathes are generally detected when there is no cutting load and the CNC lathe is not moving or the movement speed is low, so it is generally called the static accuracy of CNC lathes.The static accuracy depends on the manufacturing accuracy of the main parts on the CNC woodworking lathe, such as the spindle and its bearings, screw nuts, gear beds, boxes, etc., and their assembly accuracy.Positioning accuracy generally includes: linear motion positioning accuracy, linear motion repeated positioning accuracy

Degree, linear motion mechanical origin return accuracy, rotary motion positioning accuracy, rotary motion repeat positioning accuracy and rotary origin return accuracy, etc.

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3. The static accuracy of CNC woodworking lathes.The static accuracy can only reflect the machining accuracy of CNC woodworking lathes to a certain extent, because in the actual working state of CNC woodworking lathes, there are a series of factors that will affect the machining accuracy, such as the elastic deformation of parts, thermal deformation, lathe vibration, lathe moving parts, and the speed of the working state when moving, the motion accuracy is different from the accuracy of low-speed detection, all of which will cause changes in the static accuracy of CNC woodworking lathes, affecting the machining accuracy of the workpiece.The working accuracy of a CNC woodworking lathe is the accuracy under the action of motion and cutting force, that is, the accuracy of a CNC woodworking lathe in the working state. The working accuracy is evaluated by the accuracy of the processed specimen.This accuracy is also a comprehensive index that essentially reflects the geometric accuracy and positioning accuracy of CNC woodworking lathes, and is reflected by machining parts.

Fourth, the transmission accuracy of CNC woodworking lathes.Transmission accuracy refers to the accuracy of the relationship between the two ends of the transmission chain.For example, a horizontal CNC lathe ensures that the tool holder can accurately move to a lead of the thread to be processed every time the spindle rotates for a week, otherwise it will cause thread errors in the workpiece.